[UAI] How to estimate the parameters of a Noisy-or belief Network?

From: ruan tong (ruan@otcaix.iscas.ac.cn)
Date: Wed Jul 04 2001 - 19:52:41 PDT

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Reply: Kathryn Blackmond Laskey: "Re: [UAI] How to estimate the parameters of a Noisy-or belief Network?"
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Hi,
        I use Noisy-or belief network in information filtering. But I do
know how to estimate the paramter (Namely, Cij)from data. Futhmore, there
are hidden variables in the network, I do not know how to deal with them.
Maybe EM algorithm is workable.
        I wonder general methods of parameter estimation in belief network
can apply to Noisy-or model, or there are may-be good methods for
simplified networks.
        Thanks in advance for any suggestions.

Tong.

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